Indium vs Thulium
| Property | In Indium | Tm Thulium |
|---|---|---|
| Atomic number | 49 | 69 |
| Symbol | In | Tm |
| Name | Indium | Thulium |
| Category | post-transition-metal | lanthanide |
| Standard Atomic Weight | 114.818 u | 168.93422 u |
| Period | 5 | 6 |
| Group | 13 | N/A |
| Block | p | s |
| Phase at STP | solid | solid |
| Electron configuration | [Kr]5s24d105p1 | [Xe]6s24f13 |
| Oxidation states | [-5, -2, -1, 0, 1, 2, 3] | [0, 1, 2, 3] |
| Electronegativity (Pauling) | 1.78 | 1.25 |
| Electron affinity | 0.3 eV | 1.029 eV |
| Density | 7310 kg/m³ | 9320 kg/m³ |
| Melting point | 156.6 °C | 1544.85 °C |
| Boiling point | 2071.85 °C | 1949.85 °C |
| Discovery year | 1863 | 1879 |